1)
An App developing company recently developed a new game that canbe played on the iPhones. The company wants to run a survey on thesatisfaction rate on the game. They randomly send out a survey to600 iPhone users who have downloaded the app and 498 of them arehappy with the game.
What is a 95% Confidence interval for the true proportion thatare satisfied with the app companies game?
Group of answer choices
(.76, .89)
(.79, .87)
(.83, .88)
(.80, .86)
2)
Referring back to the scenario in the previous few questions,suppose the app company wanted to make a 99% confidence intervalfor the true satisfaction rate with a margin of error of 2%.
How big a sample would they need to take?
Group of answer choices
4147.36
3382
3381.42
4148
3)
A video game streamer with a lot of subscribers (say 20,000)wants to switch to a new video game. The streamer will only do thisif there is evidence that more that 75% of his subscriber basewould be interested in watching the new game. He randomly selects800 subscribers and asks if they would be interested in watchingthe new game. 632 say yes. We will do a hypothesis test to assesswhether the streamer should switch games.
Identify the correct Null and Alternative Hypotheses.
Group of answer choices
Ho: p = .75 vs Ha: p < .75
Ho: p > .75 vs Ha: p = .75
Ho: p = .79 vs Ha: p > .79
Ho: p = .75 vs Ha: p > .75
4)
A video game streamer with a lot of subscribers (say 20,000)wants to switch to a new video game. The streamer will only do thisif there is evidence that more that 75% of his subscriber basewould be interested in watching the new game. He randomly selects800 subscribers and asks if they would be interested in watchingthe new game. 632 say yes. We will do a hypothesis test to assesswhether the streamer should switch games.
The conditions for a hypothesis test are met in this problem.What is the value of the test statistic? (round to twodecimals)
Group of answer choices
2.27
1.96
2.78
2.61
5)
A video game streamer with a lot of subscribers (say 20,000)wants to switch to a new video game. The streamer will only do thisif there is evidence that more that 75% of his subscriber basewould be interested in watching the new game. He randomly selects800 subscribers and asks if they would be interested in watchingthe new game. 632 say yes. We will do a hypothesis test to assesswhether the streamer should switch games.
Using the test statistic you calculated in the previousquestion, give the p-value.
Group of answer choices
.0045
.0001
.0056
.0088
